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Oct. 24, 2010, Hydrology Summary

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avatar Oct. 24, 2010, Hydrology Summary
October 25, 2010 03:05PM
Between 3.5-4.5 inches of rain fell over 24 hours (over the weekend), generating peak flow of approximately 4,500 cfs at the Merced River's Happy Isles gage. This volume equates to a 5-year flood event (defined as a 20% chance of getting a flood of this magnitude or larger in a given year). The late October's warm winter storm contained tropical moisture resulting in substantial rainfall up to 10,000 feet in elevation. Previous storms this fall helped to saturate soils prior to this flood larger than would be expected for the first major fall storm. The flood magnitude was approximately the same as the peak snowmelt flood at 10.45 feet June 7 on Pohono Bridge gage this year.
Re: Oct. 24, 2010, Hydrology Summary
October 25, 2010 04:47PM
We were there on 6/7. Campsite 62 in Lower Pines was flooded that day, also a lot of Housekeeping camp. But yesterday's peak was about a foot less than that date but still very high for October. Noticed a significant rise of the river on the Happy Isles cam the last 24 hrs.
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